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Finding the Fourth Proportional to 286,655.45, 429,926.67 and 272,430.23

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Solution

The fourth proportional to 286,655.45, 429,926.67 and 272,430.23 is: 408,591.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,655.45 : 429,926.67 = 272,430.23 : x
  2. Step 2: Convert to fraction form
    286,655.45/429,926.67 = 272,430.23/x
  3. Step 3: Cross multiply
    286,655.45x = 429,926.67 × 272,430.23
  4. Step 4: Simplify right side
    286,655.45x = 117,125,019,441.60
  5. Step 5: Solve for x
    x = 117,125,019,441.60/286,655.45
  6. Step 6: Final answer
    x = 408,591.64

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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.