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Finding the Fourth Proportional to 371,253.98, 555,939 and 311,124.34

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Solution

The fourth proportional to 371,253.98, 555,939 and 311,124.34 is: 465,897.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,253.98 : 555,939 = 311,124.34 : x
  2. Step 2: Convert to fraction form
    371,253.98/555,939 = 311,124.34/x
  3. Step 3: Cross multiply
    371,253.98x = 555,939 × 311,124.34
  4. Step 4: Simplify right side
    371,253.98x = 172,966,154,455.26
  5. Step 5: Solve for x
    x = 172,966,154,455.26/371,253.98
  6. Step 6: Final answer
    x = 465,897.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.