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Finding the Fourth Proportional to 286,987.80, 430,481.70 and 181,925.40

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Solution

The fourth proportional to 286,987.80, 430,481.70 and 181,925.40 is: 272,888.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,987.80 : 430,481.70 = 181,925.40 : x
  2. Step 2: Convert to fraction form
    286,987.80/430,481.70 = 181,925.40/x
  3. Step 3: Cross multiply
    286,987.80x = 430,481.70 × 181,925.40
  4. Step 4: Simplify right side
    286,987.80x = 78,315,555,465.18
  5. Step 5: Solve for x
    x = 78,315,555,465.18/286,987.80
  6. Step 6: Final answer
    x = 272,888.10

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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.