Home / 281,555.28-388,547.40-154,231.76

Finding the Fourth Proportional to 281,555.28, 388,547.40 and 154,231.76

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Solution

The fourth proportional to 281,555.28, 388,547.40 and 154,231.76 is: 212,840.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,555.28 : 388,547.40 = 154,231.76 : x
  2. Step 2: Convert to fraction form
    281,555.28/388,547.40 = 154,231.76/x
  3. Step 3: Cross multiply
    281,555.28x = 388,547.40 × 154,231.76
  4. Step 4: Simplify right side
    281,555.28x = 59,926,349,345.42
  5. Step 5: Solve for x
    x = 59,926,349,345.42/281,555.28
  6. Step 6: Final answer
    x = 212,840.44

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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.