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Finding the Fourth Proportional to 210,504.95, 290,482.89 and 119,870.18

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Solution

The fourth proportional to 210,504.95, 290,482.89 and 119,870.18 is: 165,412.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,504.95 : 290,482.89 = 119,870.18 : x
  2. Step 2: Convert to fraction form
    210,504.95/290,482.89 = 119,870.18/x
  3. Step 3: Cross multiply
    210,504.95x = 290,482.89 × 119,870.18
  4. Step 4: Simplify right side
    210,504.95x = 34,820,236,311.22
  5. Step 5: Solve for x
    x = 34,820,236,311.22/210,504.95
  6. Step 6: Final answer
    x = 165,412.91

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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.