Home / 286,642.08-430,135.93-99,784.80

Finding the Fourth Proportional to 286,642.08, 430,135.93 and 99,784.80

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Solution

The fourth proportional to 286,642.08, 430,135.93 and 99,784.80 is: 149,737.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,642.08 : 430,135.93 = 99,784.80 : x
  2. Step 2: Convert to fraction form
    286,642.08/430,135.93 = 99,784.80/x
  3. Step 3: Cross multiply
    286,642.08x = 430,135.93 × 99,784.80
  4. Step 4: Simplify right side
    286,642.08x = 42,921,027,747.86
  5. Step 5: Solve for x
    x = 42,921,027,747.86/286,642.08
  6. Step 6: Final answer
    x = 149,737.36

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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.