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Finding the Fourth Proportional to 210,547.55, 290,550.85 and 115,054.83

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Solution

The fourth proportional to 210,547.55, 290,550.85 and 115,054.83 is: 158,773.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,547.55 : 290,550.85 = 115,054.83 : x
  2. Step 2: Convert to fraction form
    210,547.55/290,550.85 = 115,054.83/x
  3. Step 3: Cross multiply
    210,547.55x = 290,550.85 × 115,054.83
  4. Step 4: Simplify right side
    210,547.55x = 33,429,278,365.47
  5. Step 5: Solve for x
    x = 33,429,278,365.47/210,547.55
  6. Step 6: Final answer
    x = 158,773.06

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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.