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Finding the Fourth Proportional to 307,423.58, 424,172.30 and 186,562.13

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Solution

The fourth proportional to 307,423.58, 424,172.30 and 186,562.13 is: 257,411.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,423.58 : 424,172.30 = 186,562.13 : x
  2. Step 2: Convert to fraction form
    307,423.58/424,172.30 = 186,562.13/x
  3. Step 3: Cross multiply
    307,423.58x = 424,172.30 × 186,562.13
  4. Step 4: Simplify right side
    307,423.58x = 79,134,484,721.33
  5. Step 5: Solve for x
    x = 79,134,484,721.33/307,423.58
  6. Step 6: Final answer
    x = 257,411.89

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1.5x scale

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.