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Finding the Fourth Proportional to 576,779.60, 865,234.20 and 177,417.20

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Solution

The fourth proportional to 576,779.60, 865,234.20 and 177,417.20 is: 266,145.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,779.60 : 865,234.20 = 177,417.20 : x
  2. Step 2: Convert to fraction form
    576,779.60/865,234.20 = 177,417.20/x
  3. Step 3: Cross multiply
    576,779.60x = 865,234.20 × 177,417.20
  4. Step 4: Simplify right side
    576,779.60x = 153,507,429,108.24
  5. Step 5: Solve for x
    x = 153,507,429,108.24/576,779.60
  6. Step 6: Final answer
    x = 266,145.73

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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.