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Finding the Fourth Proportional to 210,434.28, 290,459.70 and 133,955.70

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Solution

The fourth proportional to 210,434.28, 290,459.70 and 133,955.70 is: 184,897.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,434.28 : 290,459.70 = 133,955.70 : x
  2. Step 2: Convert to fraction form
    210,434.28/290,459.70 = 133,955.70/x
  3. Step 3: Cross multiply
    210,434.28x = 290,459.70 × 133,955.70
  4. Step 4: Simplify right side
    210,434.28x = 38,908,732,435.29
  5. Step 5: Solve for x
    x = 38,908,732,435.29/210,434.28
  6. Step 6: Final answer
    x = 184,897.31

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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.