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Finding the Fourth Proportional to 268,436.94, 402,655.50 and 78,897.34

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Solution

The fourth proportional to 268,436.94, 402,655.50 and 78,897.34 is: 118,346.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,436.94 : 402,655.50 = 78,897.34 : x
  2. Step 2: Convert to fraction form
    268,436.94/402,655.50 = 78,897.34/x
  3. Step 3: Cross multiply
    268,436.94x = 402,655.50 × 78,897.34
  4. Step 4: Simplify right side
    268,436.94x = 31,768,446,485.24
  5. Step 5: Solve for x
    x = 31,768,446,485.24/268,436.94
  6. Step 6: Final answer
    x = 118,346.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.