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Finding the Fourth Proportional to 389,210.67, 537,110.80 and 219,444.80

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Solution

The fourth proportional to 389,210.67, 537,110.80 and 219,444.80 is: 302,833.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,210.67 : 537,110.80 = 219,444.80 : x
  2. Step 2: Convert to fraction form
    389,210.67/537,110.80 = 219,444.80/x
  3. Step 3: Cross multiply
    389,210.67x = 537,110.80 × 219,444.80
  4. Step 4: Simplify right side
    389,210.67x = 117,866,168,849.67
  5. Step 5: Solve for x
    x = 117,866,168,849.67/389,210.67
  6. Step 6: Final answer
    x = 302,833.86

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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.