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Finding the Fourth Proportional to 510,425.60, 765,749.12 and 155,430.32

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Solution

The fourth proportional to 510,425.60, 765,749.12 and 155,430.32 is: 233,179.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,425.60 : 765,749.12 = 155,430.32 : x
  2. Step 2: Convert to fraction form
    510,425.60/765,749.12 = 155,430.32/x
  3. Step 3: Cross multiply
    510,425.60x = 765,749.12 × 155,430.32
  4. Step 4: Simplify right side
    510,425.60x = 119,020,630,761.32
  5. Step 5: Solve for x
    x = 119,020,630,761.32/510,425.60
  6. Step 6: Final answer
    x = 233,179.20

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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.