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Finding the Fourth Proportional to 218,798.98, 301,938.42 and 123,303.76

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Solution

The fourth proportional to 218,798.98, 301,938.42 and 123,303.76 is: 170,156.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,798.98 : 301,938.42 = 123,303.76 : x
  2. Step 2: Convert to fraction form
    218,798.98/301,938.42 = 123,303.76/x
  3. Step 3: Cross multiply
    218,798.98x = 301,938.42 × 123,303.76
  4. Step 4: Simplify right side
    218,798.98x = 37,230,142,612.79
  5. Step 5: Solve for x
    x = 37,230,142,612.79/218,798.98
  6. Step 6: Final answer
    x = 170,156.84

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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.