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Finding the Fourth Proportional to 388,430.84, 536,061.51 and 235,475.48

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Solution

The fourth proportional to 388,430.84, 536,061.51 and 235,475.48 is: 324,972.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,430.84 : 536,061.51 = 235,475.48 : x
  2. Step 2: Convert to fraction form
    388,430.84/536,061.51 = 235,475.48/x
  3. Step 3: Cross multiply
    388,430.84x = 536,061.51 × 235,475.48
  4. Step 4: Simplify right side
    388,430.84x = 126,229,341,376.78
  5. Step 5: Solve for x
    x = 126,229,341,376.78/388,430.84
  6. Step 6: Final answer
    x = 324,972.50

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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.