Home / 487,280.55-730,430.13-203,128.41

Finding the Fourth Proportional to 487,280.55, 730,430.13 and 203,128.41

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Solution

The fourth proportional to 487,280.55, 730,430.13 and 203,128.41 is: 304,488.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,280.55 : 730,430.13 = 203,128.41 : x
  2. Step 2: Convert to fraction form
    487,280.55/730,430.13 = 203,128.41/x
  3. Step 3: Cross multiply
    487,280.55x = 730,430.13 × 203,128.41
  4. Step 4: Simplify right side
    487,280.55x = 148,371,110,922.99
  5. Step 5: Solve for x
    x = 148,371,110,922.99/487,280.55
  6. Step 6: Final answer
    x = 304,488.06

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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.