Home / 281,157.48-388,002.92-153,835.79

Finding the Fourth Proportional to 281,157.48, 388,002.92 and 153,835.79

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Solution

The fourth proportional to 281,157.48, 388,002.92 and 153,835.79 is: 212,296.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,157.48 : 388,002.92 = 153,835.79 : x
  2. Step 2: Convert to fraction form
    281,157.48/388,002.92 = 153,835.79/x
  3. Step 3: Cross multiply
    281,157.48x = 388,002.92 × 153,835.79
  4. Step 4: Simplify right side
    281,157.48x = 59,688,733,011.31
  5. Step 5: Solve for x
    x = 59,688,733,011.31/281,157.48
  6. Step 6: Final answer
    x = 212,296.44

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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.