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Finding the Fourth Proportional to 372,016.65, 513,193.72 and 243,030.63

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Solution

The fourth proportional to 372,016.65, 513,193.72 and 243,030.63 is: 335,258.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,016.65 : 513,193.72 = 243,030.63 : x
  2. Step 2: Convert to fraction form
    372,016.65/513,193.72 = 243,030.63/x
  3. Step 3: Cross multiply
    372,016.65x = 513,193.72 × 243,030.63
  4. Step 4: Simplify right side
    372,016.65x = 124,721,791,868.49
  5. Step 5: Solve for x
    x = 124,721,791,868.49/372,016.65
  6. Step 6: Final answer
    x = 335,258.63

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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.