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Finding the Fourth Proportional to 291,710.40, 437,565.60 and 247,970.40

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Solution

The fourth proportional to 291,710.40, 437,565.60 and 247,970.40 is: 371,955.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,710.40 : 437,565.60 = 247,970.40 : x
  2. Step 2: Convert to fraction form
    291,710.40/437,565.60 = 247,970.40/x
  3. Step 3: Cross multiply
    291,710.40x = 437,565.60 × 247,970.40
  4. Step 4: Simplify right side
    291,710.40x = 108,503,316,858.24
  5. Step 5: Solve for x
    x = 108,503,316,858.24/291,710.40
  6. Step 6: Final answer
    x = 371,955.60

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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.