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Finding the Fourth Proportional to 615,039.64, 922,903.92 and 260,319.16

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Solution

The fourth proportional to 615,039.64, 922,903.92 and 260,319.16 is: 390,624.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,039.64 : 922,903.92 = 260,319.16 : x
  2. Step 2: Convert to fraction form
    615,039.64/922,903.92 = 260,319.16/x
  3. Step 3: Cross multiply
    615,039.64x = 922,903.92 × 260,319.16
  4. Step 4: Simplify right side
    615,039.64x = 240,249,573,215.11
  5. Step 5: Solve for x
    x = 240,249,573,215.11/615,039.64
  6. Step 6: Final answer
    x = 390,624.53

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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.