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Finding the Fourth Proportional to 279,754.47, 386,061.24 and 152,430.08

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Solution

The fourth proportional to 279,754.47, 386,061.24 and 152,430.08 is: 210,353.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,754.47 : 386,061.24 = 152,430.08 : x
  2. Step 2: Convert to fraction form
    279,754.47/386,061.24 = 152,430.08/x
  3. Step 3: Cross multiply
    279,754.47x = 386,061.24 × 152,430.08
  4. Step 4: Simplify right side
    279,754.47x = 58,847,343,767.79
  5. Step 5: Solve for x
    x = 58,847,343,767.79/279,754.47
  6. Step 6: Final answer
    x = 210,353.54

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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.