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Finding the Fourth Proportional to 510,587.20, 765,909.60 and 155,612.80

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Solution

The fourth proportional to 510,587.20, 765,909.60 and 155,612.80 is: 233,427.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,587.20 : 765,909.60 = 155,612.80 : x
  2. Step 2: Convert to fraction form
    510,587.20/765,909.60 = 155,612.80/x
  3. Step 3: Cross multiply
    510,587.20x = 765,909.60 × 155,612.80
  4. Step 4: Simplify right side
    510,587.20x = 119,185,337,402.88
  5. Step 5: Solve for x
    x = 119,185,337,402.88/510,587.20
  6. Step 6: Final answer
    x = 233,427.98

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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.