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Finding the Fourth Proportional to 279,498.83, 385,762.99 and 177,642.95

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Solution

The fourth proportional to 279,498.83, 385,762.99 and 177,642.95 is: 245,181.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,498.83 : 385,762.99 = 177,642.95 : x
  2. Step 2: Convert to fraction form
    279,498.83/385,762.99 = 177,642.95/x
  3. Step 3: Cross multiply
    279,498.83x = 385,762.99 × 177,642.95
  4. Step 4: Simplify right side
    279,498.83x = 68,528,075,544.42
  5. Step 5: Solve for x
    x = 68,528,075,544.42/279,498.83
  6. Step 6: Final answer
    x = 245,181.98

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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.