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Finding the Fourth Proportional to 284,121.64, 392,087.08 and 156,796.32

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Solution

The fourth proportional to 284,121.64, 392,087.08 and 156,796.32 is: 216,378.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,121.64 : 392,087.08 = 156,796.32 : x
  2. Step 2: Convert to fraction form
    284,121.64/392,087.08 = 156,796.32/x
  3. Step 3: Cross multiply
    284,121.64x = 392,087.08 × 156,796.32
  4. Step 4: Simplify right side
    284,121.64x = 61,477,811,263.55
  5. Step 5: Solve for x
    x = 61,477,811,263.55/284,121.64
  6. Step 6: Final answer
    x = 216,378.49

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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.