Home / 210,506.08-290,502.57-115,018.69

Finding the Fourth Proportional to 210,506.08, 290,502.57 and 115,018.69

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Solution

The fourth proportional to 210,506.08, 290,502.57 and 115,018.69 is: 158,728.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,506.08 : 290,502.57 = 115,018.69 : x
  2. Step 2: Convert to fraction form
    210,506.08/290,502.57 = 115,018.69/x
  3. Step 3: Cross multiply
    210,506.08x = 290,502.57 × 115,018.69
  4. Step 4: Simplify right side
    210,506.08x = 33,413,225,043.03
  5. Step 5: Solve for x
    x = 33,413,225,043.03/210,506.08
  6. Step 6: Final answer
    x = 158,728.08

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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.