Home / 281,117.16-387,968.36-153,811.89

Finding the Fourth Proportional to 281,117.16, 387,968.36 and 153,811.89

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Solution

The fourth proportional to 281,117.16, 387,968.36 and 153,811.89 is: 212,275.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,117.16 : 387,968.36 = 153,811.89 : x
  2. Step 2: Convert to fraction form
    281,117.16/387,968.36 = 153,811.89/x
  3. Step 3: Cross multiply
    281,117.16x = 387,968.36 × 153,811.89
  4. Step 4: Simplify right side
    281,117.16x = 59,674,146,711.80
  5. Step 5: Solve for x
    x = 59,674,146,711.80/281,117.16
  6. Step 6: Final answer
    x = 212,275.01

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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.