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Finding the Fourth Proportional to 291,323.80, 436,985.70 and 265,058.20

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Solution

The fourth proportional to 291,323.80, 436,985.70 and 265,058.20 is: 397,587.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,323.80 : 436,985.70 = 265,058.20 : x
  2. Step 2: Convert to fraction form
    291,323.80/436,985.70 = 265,058.20/x
  3. Step 3: Cross multiply
    291,323.80x = 436,985.70 × 265,058.20
  4. Step 4: Simplify right side
    291,323.80x = 115,826,643,067.74
  5. Step 5: Solve for x
    x = 115,826,643,067.74/291,323.80
  6. Step 6: Final answer
    x = 397,587.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.