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Finding the Fourth Proportional to 289,681.80, 433,538.55 and 254,252.40

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Solution

The fourth proportional to 289,681.80, 433,538.55 and 254,252.40 is: 380,514.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,681.80 : 433,538.55 = 254,252.40 : x
  2. Step 2: Convert to fraction form
    289,681.80/433,538.55 = 254,252.40/x
  3. Step 3: Cross multiply
    289,681.80x = 433,538.55 × 254,252.40
  4. Step 4: Simplify right side
    289,681.80x = 110,228,216,830.02
  5. Step 5: Solve for x
    x = 110,228,216,830.02/289,681.80
  6. Step 6: Final answer
    x = 380,514.82

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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.