Home / 286,885.13-430,376.90-87,225.71

Finding the Fourth Proportional to 286,885.13, 430,376.90 and 87,225.71

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Solution

The fourth proportional to 286,885.13, 430,376.90 and 87,225.71 is: 130,853.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,885.13 : 430,376.90 = 87,225.71 : x
  2. Step 2: Convert to fraction form
    286,885.13/430,376.90 = 87,225.71/x
  3. Step 3: Cross multiply
    286,885.13x = 430,376.90 × 87,225.71
  4. Step 4: Simplify right side
    286,885.13x = 37,539,928,082.09
  5. Step 5: Solve for x
    x = 37,539,928,082.09/286,885.13
  6. Step 6: Final answer
    x = 130,853.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.