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Finding the Fourth Proportional to 291,347.51, 402,070.78 and 168,844.09

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Solution

The fourth proportional to 291,347.51, 402,070.78 and 168,844.09 is: 233,011.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,347.51 : 402,070.78 = 168,844.09 : x
  2. Step 2: Convert to fraction form
    291,347.51/402,070.78 = 168,844.09/x
  3. Step 3: Cross multiply
    291,347.51x = 402,070.78 × 168,844.09
  4. Step 4: Simplify right side
    291,347.51x = 67,887,274,964.69
  5. Step 5: Solve for x
    x = 67,887,274,964.69/291,347.51
  6. Step 6: Final answer
    x = 233,011.34

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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.