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Finding the Fourth Proportional to 247,232, 370,830.72 and 128,970.08

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Solution

The fourth proportional to 247,232, 370,830.72 and 128,970.08 is: 193,446.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,232 : 370,830.72 = 128,970.08 : x
  2. Step 2: Convert to fraction form
    247,232/370,830.72 = 128,970.08/x
  3. Step 3: Cross multiply
    247,232x = 370,830.72 × 128,970.08
  4. Step 4: Simplify right side
    247,232x = 47,826,067,624.86
  5. Step 5: Solve for x
    x = 47,826,067,624.86/247,232
  6. Step 6: Final answer
    x = 193,446.11

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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.