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Finding the Fourth Proportional to 281,141.48, 387,984.48 and 153,814.16

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Solution

The fourth proportional to 281,141.48, 387,984.48 and 153,814.16 is: 212,268.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,141.48 : 387,984.48 = 153,814.16 : x
  2. Step 2: Convert to fraction form
    281,141.48/387,984.48 = 153,814.16/x
  3. Step 3: Cross multiply
    281,141.48x = 387,984.48 × 153,814.16
  4. Step 4: Simplify right side
    281,141.48x = 59,677,506,884.24
  5. Step 5: Solve for x
    x = 59,677,506,884.24/281,141.48
  6. Step 6: Final answer
    x = 212,268.59

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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.