Home / 287,569.18-431,545.74-100,580.68

Finding the Fourth Proportional to 287,569.18, 431,545.74 and 100,580.68

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Solution

The fourth proportional to 287,569.18, 431,545.74 and 100,580.68 is: 150,938.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,569.18 : 431,545.74 = 100,580.68 : x
  2. Step 2: Convert to fraction form
    287,569.18/431,545.74 = 100,580.68/x
  3. Step 3: Cross multiply
    287,569.18x = 431,545.74 × 100,580.68
  4. Step 4: Simplify right side
    287,569.18x = 43,405,163,980.30
  5. Step 5: Solve for x
    x = 43,405,163,980.30/287,569.18
  6. Step 6: Final answer
    x = 150,938.16

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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.