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Finding the Fourth Proportional to 510,439.62, 765,437.52 and 155,370.45

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Solution

The fourth proportional to 510,439.62, 765,437.52 and 155,370.45 is: 232,988.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,439.62 : 765,437.52 = 155,370.45 : x
  2. Step 2: Convert to fraction form
    510,439.62/765,437.52 = 155,370.45/x
  3. Step 3: Cross multiply
    510,439.62x = 765,437.52 × 155,370.45
  4. Step 4: Simplify right side
    510,439.62x = 118,926,371,929.28
  5. Step 5: Solve for x
    x = 118,926,371,929.28/510,439.62
  6. Step 6: Final answer
    x = 232,988.13

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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.