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Finding the Fourth Proportional to 216,810.34, 325,215.51 and 142,921.06

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Solution

The fourth proportional to 216,810.34, 325,215.51 and 142,921.06 is: 214,381.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,810.34 : 325,215.51 = 142,921.06 : x
  2. Step 2: Convert to fraction form
    216,810.34/325,215.51 = 142,921.06/x
  3. Step 3: Cross multiply
    216,810.34x = 325,215.51 × 142,921.06
  4. Step 4: Simplify right side
    216,810.34x = 46,480,145,417.64
  5. Step 5: Solve for x
    x = 46,480,145,417.64/216,810.34
  6. Step 6: Final answer
    x = 214,381.59

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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.