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Finding the Fourth Proportional to 291,603.65, 437,339.79 and 104,615.15

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Solution

The fourth proportional to 291,603.65, 437,339.79 and 104,615.15 is: 156,899.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,603.65 : 437,339.79 = 104,615.15 : x
  2. Step 2: Convert to fraction form
    291,603.65/437,339.79 = 104,615.15/x
  3. Step 3: Cross multiply
    291,603.65x = 437,339.79 × 104,615.15
  4. Step 4: Simplify right side
    291,603.65x = 45,752,365,545.12
  5. Step 5: Solve for x
    x = 45,752,365,545.12/291,603.65
  6. Step 6: Final answer
    x = 156,899.16

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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.