Home / 221,916.71-306,248.34-126,421.36

Finding the Fourth Proportional to 221,916.71, 306,248.34 and 126,421.36

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Solution

The fourth proportional to 221,916.71, 306,248.34 and 126,421.36 is: 174,463.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,916.71 : 306,248.34 = 126,421.36 : x
  2. Step 2: Convert to fraction form
    221,916.71/306,248.34 = 126,421.36/x
  3. Step 3: Cross multiply
    221,916.71x = 306,248.34 × 126,421.36
  4. Step 4: Simplify right side
    221,916.71x = 38,716,331,349.00
  5. Step 5: Solve for x
    x = 38,716,331,349.00/221,916.71
  6. Step 6: Final answer
    x = 174,463.34

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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.