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Finding the Fourth Proportional to 288,612.12, 432,918.18 and 174,782.87

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Solution

The fourth proportional to 288,612.12, 432,918.18 and 174,782.87 is: 262,174.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,612.12 : 432,918.18 = 174,782.87 : x
  2. Step 2: Convert to fraction form
    288,612.12/432,918.18 = 174,782.87/x
  3. Step 3: Cross multiply
    288,612.12x = 432,918.18 × 174,782.87
  4. Step 4: Simplify right side
    288,612.12x = 75,666,681,975.58
  5. Step 5: Solve for x
    x = 75,666,681,975.58/288,612.12
  6. Step 6: Final answer
    x = 262,174.31

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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.