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Finding the Fourth Proportional to 288,985.98, 398,794.64 and 159,924.40

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Solution

The fourth proportional to 288,985.98, 398,794.64 and 159,924.40 is: 220,692.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,985.98 : 398,794.64 = 159,924.40 : x
  2. Step 2: Convert to fraction form
    288,985.98/398,794.64 = 159,924.40/x
  3. Step 3: Cross multiply
    288,985.98x = 398,794.64 × 159,924.40
  4. Step 4: Simplify right side
    288,985.98x = 63,776,993,525.22
  5. Step 5: Solve for x
    x = 63,776,993,525.22/288,985.98
  6. Step 6: Final answer
    x = 220,692.34

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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.