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Finding the Fourth Proportional to 281,199.46, 388,055.28 and 153,875.07

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Solution

The fourth proportional to 281,199.46, 388,055.28 and 153,875.07 is: 212,347.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,199.46 : 388,055.28 = 153,875.07 : x
  2. Step 2: Convert to fraction form
    281,199.46/388,055.28 = 153,875.07/x
  3. Step 3: Cross multiply
    281,199.46x = 388,055.28 × 153,875.07
  4. Step 4: Simplify right side
    281,199.46x = 59,712,031,433.59
  5. Step 5: Solve for x
    x = 59,712,031,433.59/281,199.46
  6. Step 6: Final answer
    x = 212,347.60

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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.