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Finding the Fourth Proportional to 278,567.69, 384,423.40 and 151,243.30

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Solution

The fourth proportional to 278,567.69, 384,423.40 and 151,243.30 is: 208,715.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,567.69 : 384,423.40 = 151,243.30 : x
  2. Step 2: Convert to fraction form
    278,567.69/384,423.40 = 151,243.30/x
  3. Step 3: Cross multiply
    278,567.69x = 384,423.40 × 151,243.30
  4. Step 4: Simplify right side
    278,567.69x = 58,141,463,613.22
  5. Step 5: Solve for x
    x = 58,141,463,613.22/278,567.69
  6. Step 6: Final answer
    x = 208,715.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.