Home / 281,156.40-387,998.64-153,837.36

Finding the Fourth Proportional to 281,156.40, 387,998.64 and 153,837.36

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Solution

The fourth proportional to 281,156.40, 387,998.64 and 153,837.36 is: 212,297.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,156.40 : 387,998.64 = 153,837.36 : x
  2. Step 2: Convert to fraction form
    281,156.40/387,998.64 = 153,837.36/x
  3. Step 3: Cross multiply
    281,156.40x = 387,998.64 × 153,837.36
  4. Step 4: Simplify right side
    281,156.40x = 59,688,686,461.19
  5. Step 5: Solve for x
    x = 59,688,686,461.19/281,156.40
  6. Step 6: Final answer
    x = 212,297.09

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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.