Home / 390,372.54-538,506.09-237,457.50

Finding the Fourth Proportional to 390,372.54, 538,506.09 and 237,457.50

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Solution

The fourth proportional to 390,372.54, 538,506.09 and 237,457.50 is: 327,564.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,372.54 : 538,506.09 = 237,457.50 : x
  2. Step 2: Convert to fraction form
    390,372.54/538,506.09 = 237,457.50/x
  3. Step 3: Cross multiply
    390,372.54x = 538,506.09 × 237,457.50
  4. Step 4: Simplify right side
    390,372.54x = 127,872,309,866.18
  5. Step 5: Solve for x
    x = 127,872,309,866.18/390,372.54
  6. Step 6: Final answer
    x = 327,564.82

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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.