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Finding the Fourth Proportional to 315,565.72, 473,277.84 and 90,876.04

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Solution

The fourth proportional to 315,565.72, 473,277.84 and 90,876.04 is: 136,293.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,565.72 : 473,277.84 = 90,876.04 : x
  2. Step 2: Convert to fraction form
    315,565.72/473,277.84 = 90,876.04/x
  3. Step 3: Cross multiply
    315,565.72x = 473,277.84 × 90,876.04
  4. Step 4: Simplify right side
    315,565.72x = 43,009,615,918.95
  5. Step 5: Solve for x
    x = 43,009,615,918.95/315,565.72
  6. Step 6: Final answer
    x = 136,293.69

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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.