Home / 284,212.47-392,216.36-156,888.21

Finding the Fourth Proportional to 284,212.47, 392,216.36 and 156,888.21

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Solution

The fourth proportional to 284,212.47, 392,216.36 and 156,888.21 is: 216,507.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,212.47 : 392,216.36 = 156,888.21 : x
  2. Step 2: Convert to fraction form
    284,212.47/392,216.36 = 156,888.21/x
  3. Step 3: Cross multiply
    284,212.47x = 392,216.36 × 156,888.21
  4. Step 4: Simplify right side
    284,212.47x = 61,534,121,868.67
  5. Step 5: Solve for x
    x = 61,534,121,868.67/284,212.47
  6. Step 6: Final answer
    x = 216,507.47

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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.