Home / 284,510.12-392,619.36-155,445.81

Finding the Fourth Proportional to 284,510.12, 392,619.36 and 155,445.81

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Solution

The fourth proportional to 284,510.12, 392,619.36 and 155,445.81 is: 214,512.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,510.12 : 392,619.36 = 155,445.81 : x
  2. Step 2: Convert to fraction form
    284,510.12/392,619.36 = 155,445.81/x
  3. Step 3: Cross multiply
    284,510.12x = 392,619.36 × 155,445.81
  4. Step 4: Simplify right side
    284,510.12x = 61,031,034,436.88
  5. Step 5: Solve for x
    x = 61,031,034,436.88/284,510.12
  6. Step 6: Final answer
    x = 214,512.71

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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.