Home / 421,564.48-581,780.28-249,581.20

Finding the Fourth Proportional to 421,564.48, 581,780.28 and 249,581.20

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Solution

The fourth proportional to 421,564.48, 581,780.28 and 249,581.20 is: 344,434.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,564.48 : 581,780.28 = 249,581.20 : x
  2. Step 2: Convert to fraction form
    421,564.48/581,780.28 = 249,581.20/x
  3. Step 3: Cross multiply
    421,564.48x = 581,780.28 × 249,581.20
  4. Step 4: Simplify right side
    421,564.48x = 145,201,420,418.74
  5. Step 5: Solve for x
    x = 145,201,420,418.74/421,564.48
  6. Step 6: Final answer
    x = 344,434.66

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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.