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Finding the Fourth Proportional to 279,452.58, 385,642.59 and 152,127.84

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Solution

The fourth proportional to 279,452.58, 385,642.59 and 152,127.84 is: 209,935.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,452.58 : 385,642.59 = 152,127.84 : x
  2. Step 2: Convert to fraction form
    279,452.58/385,642.59 = 152,127.84/x
  3. Step 3: Cross multiply
    279,452.58x = 385,642.59 × 152,127.84
  4. Step 4: Simplify right side
    279,452.58x = 58,666,974,228.71
  5. Step 5: Solve for x
    x = 58,666,974,228.71/279,452.58
  6. Step 6: Final answer
    x = 209,935.35

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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.