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Finding the Fourth Proportional to 461,339.72, 636,648.90 and 260,135.72

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Solution

The fourth proportional to 461,339.72, 636,648.90 and 260,135.72 is: 358,987.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,339.72 : 636,648.90 = 260,135.72 : x
  2. Step 2: Convert to fraction form
    461,339.72/636,648.90 = 260,135.72/x
  3. Step 3: Cross multiply
    461,339.72x = 636,648.90 × 260,135.72
  4. Step 4: Simplify right side
    461,339.72x = 165,615,119,988.71
  5. Step 5: Solve for x
    x = 165,615,119,988.71/461,339.72
  6. Step 6: Final answer
    x = 358,987.34

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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.