Home / 210,871.36-291,001.28-115,376.32

Finding the Fourth Proportional to 210,871.36, 291,001.28 and 115,376.32

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Solution

The fourth proportional to 210,871.36, 291,001.28 and 115,376.32 is: 159,218.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,871.36 : 291,001.28 = 115,376.32 : x
  2. Step 2: Convert to fraction form
    210,871.36/291,001.28 = 115,376.32/x
  3. Step 3: Cross multiply
    210,871.36x = 291,001.28 × 115,376.32
  4. Step 4: Simplify right side
    210,871.36x = 33,574,656,801.69
  5. Step 5: Solve for x
    x = 33,574,656,801.69/210,871.36
  6. Step 6: Final answer
    x = 159,218.67

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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.