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Finding the Fourth Proportional to 283,134.64, 390,725.87 and 155,810.24

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Solution

The fourth proportional to 283,134.64, 390,725.87 and 155,810.24 is: 215,018.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,134.64 : 390,725.87 = 155,810.24 : x
  2. Step 2: Convert to fraction form
    283,134.64/390,725.87 = 155,810.24/x
  3. Step 3: Cross multiply
    283,134.64x = 390,725.87 × 155,810.24
  4. Step 4: Simplify right side
    283,134.64x = 60,879,088,846.23
  5. Step 5: Solve for x
    x = 60,879,088,846.23/283,134.64
  6. Step 6: Final answer
    x = 215,018.16

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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.