Home / 389,185.12-537,075.24-210,337.12

Finding the Fourth Proportional to 389,185.12, 537,075.24 and 210,337.12

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Solution

The fourth proportional to 389,185.12, 537,075.24 and 210,337.12 is: 290,265.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,185.12 : 537,075.24 = 210,337.12 : x
  2. Step 2: Convert to fraction form
    389,185.12/537,075.24 = 210,337.12/x
  3. Step 3: Cross multiply
    389,185.12x = 537,075.24 × 210,337.12
  4. Step 4: Simplify right side
    389,185.12x = 112,966,859,204.91
  5. Step 5: Solve for x
    x = 112,966,859,204.91/389,185.12
  6. Step 6: Final answer
    x = 290,265.10

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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.