Home / 284,106.11-392,065.05-156,789.50

Finding the Fourth Proportional to 284,106.11, 392,065.05 and 156,789.50

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Solution

The fourth proportional to 284,106.11, 392,065.05 and 156,789.50 is: 216,368.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,106.11 : 392,065.05 = 156,789.50 : x
  2. Step 2: Convert to fraction form
    284,106.11/392,065.05 = 156,789.50/x
  3. Step 3: Cross multiply
    284,106.11x = 392,065.05 × 156,789.50
  4. Step 4: Simplify right side
    284,106.11x = 61,471,681,196.65
  5. Step 5: Solve for x
    x = 61,471,681,196.65/284,106.11
  6. Step 6: Final answer
    x = 216,368.74

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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.