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Finding the Fourth Proportional to 424,807.10, 637,118.20 and 140,430.46

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Solution

The fourth proportional to 424,807.10, 637,118.20 and 140,430.46 is: 210,615.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,807.10 : 637,118.20 = 140,430.46 : x
  2. Step 2: Convert to fraction form
    424,807.10/637,118.20 = 140,430.46/x
  3. Step 3: Cross multiply
    424,807.10x = 637,118.20 × 140,430.46
  4. Step 4: Simplify right side
    424,807.10x = 89,470,801,900.37
  5. Step 5: Solve for x
    x = 89,470,801,900.37/424,807.10
  6. Step 6: Final answer
    x = 210,615.13

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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.