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Finding the Fourth Proportional to 277,316.60, 415,974.90 and 266,430.20

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Solution

The fourth proportional to 277,316.60, 415,974.90 and 266,430.20 is: 399,645.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,316.60 : 415,974.90 = 266,430.20 : x
  2. Step 2: Convert to fraction form
    277,316.60/415,974.90 = 266,430.20/x
  3. Step 3: Cross multiply
    277,316.60x = 415,974.90 × 266,430.20
  4. Step 4: Simplify right side
    277,316.60x = 110,828,275,801.98
  5. Step 5: Solve for x
    x = 110,828,275,801.98/277,316.60
  6. Step 6: Final answer
    x = 399,645.30

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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.