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Finding the Fourth Proportional to 243,030.79, 335,374.63 and 132,645.21

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Solution

The fourth proportional to 243,030.79, 335,374.63 and 132,645.21 is: 183,046.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,030.79 : 335,374.63 = 132,645.21 : x
  2. Step 2: Convert to fraction form
    243,030.79/335,374.63 = 132,645.21/x
  3. Step 3: Cross multiply
    243,030.79x = 335,374.63 × 132,645.21
  4. Step 4: Simplify right side
    243,030.79x = 44,485,838,225.02
  5. Step 5: Solve for x
    x = 44,485,838,225.02/243,030.79
  6. Step 6: Final answer
    x = 183,046.10

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1.5x scale

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.