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Finding the Fourth Proportional to 372,009.40, 558,143.70 and 161,798.20

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Solution

The fourth proportional to 372,009.40, 558,143.70 and 161,798.20 is: 242,753.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,009.40 : 558,143.70 = 161,798.20 : x
  2. Step 2: Convert to fraction form
    372,009.40/558,143.70 = 161,798.20/x
  3. Step 3: Cross multiply
    372,009.40x = 558,143.70 × 161,798.20
  4. Step 4: Simplify right side
    372,009.40x = 90,306,646,001.34
  5. Step 5: Solve for x
    x = 90,306,646,001.34/372,009.40
  6. Step 6: Final answer
    x = 242,753.67

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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.