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Finding the Fourth Proportional to 407,971.02, 611,279.10 and 249,867.12

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Solution

The fourth proportional to 407,971.02, 611,279.10 and 249,867.12 is: 374,385.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,971.02 : 611,279.10 = 249,867.12 : x
  2. Step 2: Convert to fraction form
    407,971.02/611,279.10 = 249,867.12/x
  3. Step 3: Cross multiply
    407,971.02x = 611,279.10 × 249,867.12
  4. Step 4: Simplify right side
    407,971.02x = 152,738,548,233.19
  5. Step 5: Solve for x
    x = 152,738,548,233.19/407,971.02
  6. Step 6: Final answer
    x = 374,385.78

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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.