Home / 282,931.56-390,448.20-153,871.28

Finding the Fourth Proportional to 282,931.56, 390,448.20 and 153,871.28

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Solution

The fourth proportional to 282,931.56, 390,448.20 and 153,871.28 is: 212,343.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,931.56 : 390,448.20 = 153,871.28 : x
  2. Step 2: Convert to fraction form
    282,931.56/390,448.20 = 153,871.28/x
  3. Step 3: Cross multiply
    282,931.56x = 390,448.20 × 153,871.28
  4. Step 4: Simplify right side
    282,931.56x = 60,078,762,355.46
  5. Step 5: Solve for x
    x = 60,078,762,355.46/282,931.56
  6. Step 6: Final answer
    x = 212,343.80

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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.