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Finding the Fourth Proportional to 286,871.42, 395,887.65 and 159,547.07

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Solution

The fourth proportional to 286,871.42, 395,887.65 and 159,547.07 is: 220,177.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,871.42 : 395,887.65 = 159,547.07 : x
  2. Step 2: Convert to fraction form
    286,871.42/395,887.65 = 159,547.07/x
  3. Step 3: Cross multiply
    286,871.42x = 395,887.65 × 159,547.07
  4. Step 4: Simplify right side
    286,871.42x = 63,162,714,606.69
  5. Step 5: Solve for x
    x = 63,162,714,606.69/286,871.42
  6. Step 6: Final answer
    x = 220,177.79

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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.