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Finding the Fourth Proportional to 279,764.94, 386,075.70 and 152,440.59

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Solution

The fourth proportional to 279,764.94, 386,075.70 and 152,440.59 is: 210,368.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,764.94 : 386,075.70 = 152,440.59 : x
  2. Step 2: Convert to fraction form
    279,764.94/386,075.70 = 152,440.59/x
  3. Step 3: Cross multiply
    279,764.94x = 386,075.70 × 152,440.59
  4. Step 4: Simplify right side
    279,764.94x = 58,853,607,492.66
  5. Step 5: Solve for x
    x = 58,853,607,492.66/279,764.94
  6. Step 6: Final answer
    x = 210,368.06

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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.