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Finding the Fourth Proportional to 210,772.69, 290,848.65 and 118,886.90

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Solution

The fourth proportional to 210,772.69, 290,848.65 and 118,886.90 is: 164,053.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,772.69 : 290,848.65 = 118,886.90 : x
  2. Step 2: Convert to fraction form
    210,772.69/290,848.65 = 118,886.90/x
  3. Step 3: Cross multiply
    210,772.69x = 290,848.65 × 118,886.90
  4. Step 4: Simplify right side
    210,772.69x = 34,578,092,616.22
  5. Step 5: Solve for x
    x = 34,578,092,616.22/210,772.69
  6. Step 6: Final answer
    x = 164,053.95

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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.