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Finding the Fourth Proportional to 407,712.90, 611,569.35 and 250,030.20

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Solution

The fourth proportional to 407,712.90, 611,569.35 and 250,030.20 is: 375,045.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,712.90 : 611,569.35 = 250,030.20 : x
  2. Step 2: Convert to fraction form
    407,712.90/611,569.35 = 250,030.20/x
  3. Step 3: Cross multiply
    407,712.90x = 611,569.35 × 250,030.20
  4. Step 4: Simplify right side
    407,712.90x = 152,910,806,894.37
  5. Step 5: Solve for x
    x = 152,910,806,894.37/407,712.90
  6. Step 6: Final answer
    x = 375,045.30

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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.