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Finding the Fourth Proportional to 374,805.40, 562,013.70 and 138,026.20

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Solution

The fourth proportional to 374,805.40, 562,013.70 and 138,026.20 is: 206,967.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,805.40 : 562,013.70 = 138,026.20 : x
  2. Step 2: Convert to fraction form
    374,805.40/562,013.70 = 138,026.20/x
  3. Step 3: Cross multiply
    374,805.40x = 562,013.70 × 138,026.20
  4. Step 4: Simplify right side
    374,805.40x = 77,572,615,358.94
  5. Step 5: Solve for x
    x = 77,572,615,358.94/374,805.40
  6. Step 6: Final answer
    x = 206,967.71

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1.5x scale

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.