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Finding the Fourth Proportional to 404,718.90, 607,248.45 and 217,511.70

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Solution

The fourth proportional to 404,718.90, 607,248.45 and 217,511.70 is: 326,358.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,718.90 : 607,248.45 = 217,511.70 : x
  2. Step 2: Convert to fraction form
    404,718.90/607,248.45 = 217,511.70/x
  3. Step 3: Cross multiply
    404,718.90x = 607,248.45 × 217,511.70
  4. Step 4: Simplify right side
    404,718.90x = 132,083,642,681.87
  5. Step 5: Solve for x
    x = 132,083,642,681.87/404,718.90
  6. Step 6: Final answer
    x = 326,358.97

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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.