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Finding the Fourth Proportional to 403,320.30, 604,980.45 and 261,602.70

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Solution

The fourth proportional to 403,320.30, 604,980.45 and 261,602.70 is: 392,404.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,320.30 : 604,980.45 = 261,602.70 : x
  2. Step 2: Convert to fraction form
    403,320.30/604,980.45 = 261,602.70/x
  3. Step 3: Cross multiply
    403,320.30x = 604,980.45 × 261,602.70
  4. Step 4: Simplify right side
    403,320.30x = 158,264,519,167.22
  5. Step 5: Solve for x
    x = 158,264,519,167.22/403,320.30
  6. Step 6: Final answer
    x = 392,404.05

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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.