Home / 280,075.08-386,393.58-172,458.48

Finding the Fourth Proportional to 280,075.08, 386,393.58 and 172,458.48

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Solution

The fourth proportional to 280,075.08, 386,393.58 and 172,458.48 is: 237,924.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,075.08 : 386,393.58 = 172,458.48 : x
  2. Step 2: Convert to fraction form
    280,075.08/386,393.58 = 172,458.48/x
  3. Step 3: Cross multiply
    280,075.08x = 386,393.58 × 172,458.48
  4. Step 4: Simplify right side
    280,075.08x = 66,636,849,488.56
  5. Step 5: Solve for x
    x = 66,636,849,488.56/280,075.08
  6. Step 6: Final answer
    x = 237,924.95

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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.