Home / 281,037,128.80-387,822,908.16-155,594,915.52

Finding the Fourth Proportional to 281,037,128.80, 387,822,908.16 and 155,594,915.52

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Solution

The fourth proportional to 281,037,128.80, 387,822,908.16 and 155,594,915.52 is: 214,716,371.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,037,128.80 : 387,822,908.16 = 155,594,915.52 : x
  2. Step 2: Convert to fraction form
    281,037,128.80/387,822,908.16 = 155,594,915.52/x
  3. Step 3: Cross multiply
    281,037,128.80x = 387,822,908.16 × 155,594,915.52
  4. Step 4: Simplify right side
    281,037,128.80x = 60,343,272,631,875,928
  5. Step 5: Solve for x
    x = 60,343,272,631,875,928/281,037,128.80
  6. Step 6: Final answer
    x = 214,716,371.78

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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.