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Finding the Fourth Proportional to 400,145.76, 600,387.12 and 175,390.20

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Solution

The fourth proportional to 400,145.76, 600,387.12 and 175,390.20 is: 263,159.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,145.76 : 600,387.12 = 175,390.20 : x
  2. Step 2: Convert to fraction form
    400,145.76/600,387.12 = 175,390.20/x
  3. Step 3: Cross multiply
    400,145.76x = 600,387.12 × 175,390.20
  4. Step 4: Simplify right side
    400,145.76x = 105,302,017,054.22
  5. Step 5: Solve for x
    x = 105,302,017,054.22/400,145.76
  6. Step 6: Final answer
    x = 263,159.15

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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.