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Finding the Fourth Proportional to 291,735.51, 402,045.39 and 211,026.15

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Solution

The fourth proportional to 291,735.51, 402,045.39 and 211,026.15 is: 290,818.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,735.51 : 402,045.39 = 211,026.15 : x
  2. Step 2: Convert to fraction form
    291,735.51/402,045.39 = 211,026.15/x
  3. Step 3: Cross multiply
    291,735.51x = 402,045.39 × 211,026.15
  4. Step 4: Simplify right side
    291,735.51x = 84,842,090,776.95
  5. Step 5: Solve for x
    x = 84,842,090,776.95/291,735.51
  6. Step 6: Final answer
    x = 290,818.53

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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.