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Finding the Fourth Proportional to 472,987.80, 709,919.10 and 236,500.20

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Solution

The fourth proportional to 472,987.80, 709,919.10 and 236,500.20 is: 354,969.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,987.80 : 709,919.10 = 236,500.20 : x
  2. Step 2: Convert to fraction form
    472,987.80/709,919.10 = 236,500.20/x
  3. Step 3: Cross multiply
    472,987.80x = 709,919.10 × 236,500.20
  4. Step 4: Simplify right side
    472,987.80x = 167,896,009,133.82
  5. Step 5: Solve for x
    x = 167,896,009,133.82/472,987.80
  6. Step 6: Final answer
    x = 354,969.01

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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.