Home / 210,615.12-290,647.80-115,127.28

Finding the Fourth Proportional to 210,615.12, 290,647.80 and 115,127.28

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Solution

The fourth proportional to 210,615.12, 290,647.80 and 115,127.28 is: 158,875.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,615.12 : 290,647.80 = 115,127.28 : x
  2. Step 2: Convert to fraction form
    210,615.12/290,647.80 = 115,127.28/x
  3. Step 3: Cross multiply
    210,615.12x = 290,647.80 × 115,127.28
  4. Step 4: Simplify right side
    210,615.12x = 33,461,490,651.98
  5. Step 5: Solve for x
    x = 33,461,490,651.98/210,615.12
  6. Step 6: Final answer
    x = 158,875.06

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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.