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Finding the Fourth Proportional to 388,501.91, 536,157.32 and 235,554.74

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Solution

The fourth proportional to 388,501.91, 536,157.32 and 235,554.74 is: 325,080.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,501.91 : 536,157.32 = 235,554.74 : x
  2. Step 2: Convert to fraction form
    388,501.91/536,157.32 = 235,554.74/x
  3. Step 3: Cross multiply
    388,501.91x = 536,157.32 × 235,554.74
  4. Step 4: Simplify right side
    388,501.91x = 126,294,398,111.70
  5. Step 5: Solve for x
    x = 126,294,398,111.70/388,501.91
  6. Step 6: Final answer
    x = 325,080.51

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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.