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Finding the Fourth Proportional to 385,117.52, 577,779.32 and 118,867.28

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Solution

The fourth proportional to 385,117.52, 577,779.32 and 118,867.28 is: 178,332.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,117.52 : 577,779.32 = 118,867.28 : x
  2. Step 2: Convert to fraction form
    385,117.52/577,779.32 = 118,867.28/x
  3. Step 3: Cross multiply
    385,117.52x = 577,779.32 × 118,867.28
  4. Step 4: Simplify right side
    385,117.52x = 68,679,056,208.65
  5. Step 5: Solve for x
    x = 68,679,056,208.65/385,117.52
  6. Step 6: Final answer
    x = 178,332.72

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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.