Home / 282,931.76-390,448.46-153,871.44

Finding the Fourth Proportional to 282,931.76, 390,448.46 and 153,871.44

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Solution

The fourth proportional to 282,931.76, 390,448.46 and 153,871.44 is: 212,344.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,931.76 : 390,448.46 = 153,871.44 : x
  2. Step 2: Convert to fraction form
    282,931.76/390,448.46 = 153,871.44/x
  3. Step 3: Cross multiply
    282,931.76x = 390,448.46 × 153,871.44
  4. Step 4: Simplify right side
    282,931.76x = 60,078,866,785.98
  5. Step 5: Solve for x
    x = 60,078,866,785.98/282,931.76
  6. Step 6: Final answer
    x = 212,344.02

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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.