Home / 215,415.36-297,349.92-155,021.76

Finding the Fourth Proportional to 215,415.36, 297,349.92 and 155,021.76

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Solution

The fourth proportional to 215,415.36, 297,349.92 and 155,021.76 is: 213,985.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,415.36 : 297,349.92 = 155,021.76 : x
  2. Step 2: Convert to fraction form
    215,415.36/297,349.92 = 155,021.76/x
  3. Step 3: Cross multiply
    215,415.36x = 297,349.92 × 155,021.76
  4. Step 4: Simplify right side
    215,415.36x = 46,095,707,934.26
  5. Step 5: Solve for x
    x = 46,095,707,934.26/215,415.36
  6. Step 6: Final answer
    x = 213,985.24

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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.