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Finding the Fourth Proportional to 292,913.76, 439,068.96 and 115,348.80

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Solution

The fourth proportional to 292,913.76, 439,068.96 and 115,348.80 is: 172,904.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,913.76 : 439,068.96 = 115,348.80 : x
  2. Step 2: Convert to fraction form
    292,913.76/439,068.96 = 115,348.80/x
  3. Step 3: Cross multiply
    292,913.76x = 439,068.96 × 115,348.80
  4. Step 4: Simplify right side
    292,913.76x = 50,646,077,653.25
  5. Step 5: Solve for x
    x = 50,646,077,653.25/292,913.76
  6. Step 6: Final answer
    x = 172,904.40

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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.