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Finding the Fourth Proportional to 537,988.98, 742,427.22 and 308,555.28

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Solution

The fourth proportional to 537,988.98, 742,427.22 and 308,555.28 is: 425,807.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,988.98 : 742,427.22 = 308,555.28 : x
  2. Step 2: Convert to fraction form
    537,988.98/742,427.22 = 308,555.28/x
  3. Step 3: Cross multiply
    537,988.98x = 742,427.22 × 308,555.28
  4. Step 4: Simplify right side
    537,988.98x = 229,079,838,746.72
  5. Step 5: Solve for x
    x = 229,079,838,746.72/537,988.98
  6. Step 6: Final answer
    x = 425,807.68

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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.