Home / 287,556.10-431,334.15-163,140.10

Finding the Fourth Proportional to 287,556.10, 431,334.15 and 163,140.10

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Solution

The fourth proportional to 287,556.10, 431,334.15 and 163,140.10 is: 244,710.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,556.10 : 431,334.15 = 163,140.10 : x
  2. Step 2: Convert to fraction form
    287,556.10/431,334.15 = 163,140.10/x
  3. Step 3: Cross multiply
    287,556.10x = 431,334.15 × 163,140.10
  4. Step 4: Simplify right side
    287,556.10x = 70,367,896,364.42
  5. Step 5: Solve for x
    x = 70,367,896,364.42/287,556.10
  6. Step 6: Final answer
    x = 244,710.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.