Home / 477,670.39-715,543.90-221,141.36

Finding the Fourth Proportional to 477,670.39, 715,543.90 and 221,141.36

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Solution

The fourth proportional to 477,670.39, 715,543.90 and 221,141.36 is: 331,266.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,670.39 : 715,543.90 = 221,141.36 : x
  2. Step 2: Convert to fraction form
    477,670.39/715,543.90 = 221,141.36/x
  3. Step 3: Cross multiply
    477,670.39x = 715,543.90 × 221,141.36
  4. Step 4: Simplify right side
    477,670.39x = 158,236,352,421.71
  5. Step 5: Solve for x
    x = 158,236,352,421.71/477,670.39
  6. Step 6: Final answer
    x = 331,266.82

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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.