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Finding the Fourth Proportional to 279,395.34, 385,566.51 and 152,070.63

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Solution

The fourth proportional to 279,395.34, 385,566.51 and 152,070.63 is: 209,857.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,395.34 : 385,566.51 = 152,070.63 : x
  2. Step 2: Convert to fraction form
    279,395.34/385,566.51 = 152,070.63/x
  3. Step 3: Cross multiply
    279,395.34x = 385,566.51 × 152,070.63
  4. Step 4: Simplify right side
    279,395.34x = 58,633,342,082.60
  5. Step 5: Solve for x
    x = 58,633,342,082.60/279,395.34
  6. Step 6: Final answer
    x = 209,857.98

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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.