Home / 389,733.65-537,826.77-217,649.80

Finding the Fourth Proportional to 389,733.65, 537,826.77 and 217,649.80

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Solution

The fourth proportional to 389,733.65, 537,826.77 and 217,649.80 is: 300,353.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,733.65 : 537,826.77 = 217,649.80 : x
  2. Step 2: Convert to fraction form
    389,733.65/537,826.77 = 217,649.80/x
  3. Step 3: Cross multiply
    389,733.65x = 537,826.77 × 217,649.80
  4. Step 4: Simplify right side
    389,733.65x = 117,057,888,925.15
  5. Step 5: Solve for x
    x = 117,057,888,925.15/389,733.65
  6. Step 6: Final answer
    x = 300,353.56

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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.