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Finding the Fourth Proportional to 315,339.84, 435,179.52 and 172,108.08

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Solution

The fourth proportional to 315,339.84, 435,179.52 and 172,108.08 is: 237,514.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,339.84 : 435,179.52 = 172,108.08 : x
  2. Step 2: Convert to fraction form
    315,339.84/435,179.52 = 172,108.08/x
  3. Step 3: Cross multiply
    315,339.84x = 435,179.52 × 172,108.08
  4. Step 4: Simplify right side
    315,339.84x = 74,897,911,642.52
  5. Step 5: Solve for x
    x = 74,897,911,642.52/315,339.84
  6. Step 6: Final answer
    x = 237,514.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.