Home / 288,983.38-433,431.33-78,637.72

Finding the Fourth Proportional to 288,983.38, 433,431.33 and 78,637.72

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Solution

The fourth proportional to 288,983.38, 433,431.33 and 78,637.72 is: 117,944.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,983.38 : 433,431.33 = 78,637.72 : x
  2. Step 2: Convert to fraction form
    288,983.38/433,431.33 = 78,637.72/x
  3. Step 3: Cross multiply
    288,983.38x = 433,431.33 × 78,637.72
  4. Step 4: Simplify right side
    288,983.38x = 34,084,051,567.77
  5. Step 5: Solve for x
    x = 34,084,051,567.77/288,983.38
  6. Step 6: Final answer
    x = 117,944.68

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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.