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Finding the Fourth Proportional to 383,462.30, 530,134.57 and 287,802.92

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Solution

The fourth proportional to 383,462.30, 530,134.57 and 287,802.92 is: 397,885.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,462.30 : 530,134.57 = 287,802.92 : x
  2. Step 2: Convert to fraction form
    383,462.30/530,134.57 = 287,802.92/x
  3. Step 3: Cross multiply
    383,462.30x = 530,134.57 × 287,802.92
  4. Step 4: Simplify right side
    383,462.30x = 152,574,278,924.04
  5. Step 5: Solve for x
    x = 152,574,278,924.04/383,462.30
  6. Step 6: Final answer
    x = 397,885.99

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1.5x scale

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.