Home / 210,509.03-290,499.07-115,013.68

Finding the Fourth Proportional to 210,509.03, 290,499.07 and 115,013.68

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Solution

The fourth proportional to 210,509.03, 290,499.07 and 115,013.68 is: 158,717.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,509.03 : 290,499.07 = 115,013.68 : x
  2. Step 2: Convert to fraction form
    210,509.03/290,499.07 = 115,013.68/x
  3. Step 3: Cross multiply
    210,509.03x = 290,499.07 × 115,013.68
  4. Step 4: Simplify right side
    210,509.03x = 33,411,367,077.28
  5. Step 5: Solve for x
    x = 33,411,367,077.28/210,509.03
  6. Step 6: Final answer
    x = 158,717.03

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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.