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Finding the Fourth Proportional to 315,595.44, 473,402.88 and 138,011.04

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Solution

The fourth proportional to 315,595.44, 473,402.88 and 138,011.04 is: 207,020.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,595.44 : 473,402.88 = 138,011.04 : x
  2. Step 2: Convert to fraction form
    315,595.44/473,402.88 = 138,011.04/x
  3. Step 3: Cross multiply
    315,595.44x = 473,402.88 × 138,011.04
  4. Step 4: Simplify right side
    315,595.44x = 65,334,823,807.80
  5. Step 5: Solve for x
    x = 65,334,823,807.80/315,595.44
  6. Step 6: Final answer
    x = 207,020.81

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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.