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Finding the Fourth Proportional to 510,068.64, 765,145.79 and 155,085.74

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Solution

The fourth proportional to 510,068.64, 765,145.79 and 155,085.74 is: 232,641.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,068.64 : 765,145.79 = 155,085.74 : x
  2. Step 2: Convert to fraction form
    510,068.64/765,145.79 = 155,085.74/x
  3. Step 3: Cross multiply
    510,068.64x = 765,145.79 × 155,085.74
  4. Step 4: Simplify right side
    510,068.64x = 118,663,196,448.88
  5. Step 5: Solve for x
    x = 118,663,196,448.88/510,068.64
  6. Step 6: Final answer
    x = 232,641.62

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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.