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Finding the Fourth Proportional to 615,291.60, 922,246.20 and 315,656.40

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Solution

The fourth proportional to 615,291.60, 922,246.20 and 315,656.40 is: 473,130.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,291.60 : 922,246.20 = 315,656.40 : x
  2. Step 2: Convert to fraction form
    615,291.60/922,246.20 = 315,656.40/x
  3. Step 3: Cross multiply
    615,291.60x = 922,246.20 × 315,656.40
  4. Step 4: Simplify right side
    615,291.60x = 291,112,915,405.68
  5. Step 5: Solve for x
    x = 291,112,915,405.68/615,291.60
  6. Step 6: Final answer
    x = 473,130.00

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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.