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Finding the Fourth Proportional to 284,304.30, 392,341.84 and 155,243.67

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Solution

The fourth proportional to 284,304.30, 392,341.84 and 155,243.67 is: 214,237.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,304.30 : 392,341.84 = 155,243.67 : x
  2. Step 2: Convert to fraction form
    284,304.30/392,341.84 = 155,243.67/x
  3. Step 3: Cross multiply
    284,304.30x = 392,341.84 × 155,243.67
  4. Step 4: Simplify right side
    284,304.30x = 60,908,587,136.15
  5. Step 5: Solve for x
    x = 60,908,587,136.15/284,304.30
  6. Step 6: Final answer
    x = 214,237.31

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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.