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Finding the Fourth Proportional to 285,038.94, 392,874.36 and 216,105.59

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Solution

The fourth proportional to 285,038.94, 392,874.36 and 216,105.59 is: 297,862.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,038.94 : 392,874.36 = 216,105.59 : x
  2. Step 2: Convert to fraction form
    285,038.94/392,874.36 = 216,105.59/x
  3. Step 3: Cross multiply
    285,038.94x = 392,874.36 × 216,105.59
  4. Step 4: Simplify right side
    285,038.94x = 84,902,343,399.30
  5. Step 5: Solve for x
    x = 84,902,343,399.30/285,038.94
  6. Step 6: Final answer
    x = 297,862.26

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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.