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Finding the Fourth Proportional to 510,522.60, 765,783.90 and 155,490.50

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Solution

The fourth proportional to 510,522.60, 765,783.90 and 155,490.50 is: 233,235.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,522.60 : 765,783.90 = 155,490.50 : x
  2. Step 2: Convert to fraction form
    510,522.60/765,783.90 = 155,490.50/x
  3. Step 3: Cross multiply
    510,522.60x = 765,783.90 × 155,490.50
  4. Step 4: Simplify right side
    510,522.60x = 119,072,117,674.03
  5. Step 5: Solve for x
    x = 119,072,117,674.03/510,522.60
  6. Step 6: Final answer
    x = 233,235.74

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.