Home / 389,125.32-537,001.16-219,359.40

Finding the Fourth Proportional to 389,125.32, 537,001.16 and 219,359.40

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Solution

The fourth proportional to 389,125.32, 537,001.16 and 219,359.40 is: 302,720.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,125.32 : 537,001.16 = 219,359.40 : x
  2. Step 2: Convert to fraction form
    389,125.32/537,001.16 = 219,359.40/x
  3. Step 3: Cross multiply
    389,125.32x = 537,001.16 × 219,359.40
  4. Step 4: Simplify right side
    389,125.32x = 117,796,252,256.90
  5. Step 5: Solve for x
    x = 117,796,252,256.90/389,125.32
  6. Step 6: Final answer
    x = 302,720.60

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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.