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Finding the Fourth Proportional to 307,602.72, 424,521.08 and 186,716.29

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Solution

The fourth proportional to 307,602.72, 424,521.08 and 186,716.29 is: 257,686.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,602.72 : 424,521.08 = 186,716.29 : x
  2. Step 2: Convert to fraction form
    307,602.72/424,521.08 = 186,716.29/x
  3. Step 3: Cross multiply
    307,602.72x = 424,521.08 × 186,716.29
  4. Step 4: Simplify right side
    307,602.72x = 79,265,000,150.81
  5. Step 5: Solve for x
    x = 79,265,000,150.81/307,602.72
  6. Step 6: Final answer
    x = 257,686.28

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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.