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Finding the Fourth Proportional to 465,547.70, 698,307.71 and 128,608.62

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Solution

The fourth proportional to 465,547.70, 698,307.71 and 128,608.62 is: 192,909.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,547.70 : 698,307.71 = 128,608.62 : x
  2. Step 2: Convert to fraction form
    465,547.70/698,307.71 = 128,608.62/x
  3. Step 3: Cross multiply
    465,547.70x = 698,307.71 × 128,608.62
  4. Step 4: Simplify right side
    465,547.70x = 89,808,390,275.42
  5. Step 5: Solve for x
    x = 89,808,390,275.42/465,547.70
  6. Step 6: Final answer
    x = 192,909.11

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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.