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Finding the Fourth Proportional to 210,718.71, 290,800.98 and 118,868.85

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Solution

The fourth proportional to 210,718.71, 290,800.98 and 118,868.85 is: 164,044.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,718.71 : 290,800.98 = 118,868.85 : x
  2. Step 2: Convert to fraction form
    210,718.71/290,800.98 = 118,868.85/x
  3. Step 3: Cross multiply
    210,718.71x = 290,800.98 × 118,868.85
  4. Step 4: Simplify right side
    210,718.71x = 34,567,178,071.47
  5. Step 5: Solve for x
    x = 34,567,178,071.47/210,718.71
  6. Step 6: Final answer
    x = 164,044.18

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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.