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Finding the Fourth Proportional to 291,987.18, 437,980.77 and 70,371.18

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Solution

The fourth proportional to 291,987.18, 437,980.77 and 70,371.18 is: 105,556.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,987.18 : 437,980.77 = 70,371.18 : x
  2. Step 2: Convert to fraction form
    291,987.18/437,980.77 = 70,371.18/x
  3. Step 3: Cross multiply
    291,987.18x = 437,980.77 × 70,371.18
  4. Step 4: Simplify right side
    291,987.18x = 30,821,223,602.21
  5. Step 5: Solve for x
    x = 30,821,223,602.21/291,987.18
  6. Step 6: Final answer
    x = 105,556.77

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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.