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Finding the Fourth Proportional to 581,508.40, 872,521.80 and 265,802.80

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Solution

The fourth proportional to 581,508.40, 872,521.80 and 265,802.80 is: 398,822.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,508.40 : 872,521.80 = 265,802.80 : x
  2. Step 2: Convert to fraction form
    581,508.40/872,521.80 = 265,802.80/x
  3. Step 3: Cross multiply
    581,508.40x = 872,521.80 × 265,802.80
  4. Step 4: Simplify right side
    581,508.40x = 231,918,737,501.04
  5. Step 5: Solve for x
    x = 231,918,737,501.04/581,508.40
  6. Step 6: Final answer
    x = 398,822.68

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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.