Home / 288,830.07-433,347.71-128,891.45

Finding the Fourth Proportional to 288,830.07, 433,347.71 and 128,891.45

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Solution

The fourth proportional to 288,830.07, 433,347.71 and 128,891.45 is: 193,382.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,830.07 : 433,347.71 = 128,891.45 : x
  2. Step 2: Convert to fraction form
    288,830.07/433,347.71 = 128,891.45/x
  3. Step 3: Cross multiply
    288,830.07x = 433,347.71 × 128,891.45
  4. Step 4: Simplify right side
    288,830.07x = 55,854,815,134.99
  5. Step 5: Solve for x
    x = 55,854,815,134.99/288,830.07
  6. Step 6: Final answer
    x = 193,382.96

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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.