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Finding the Fourth Proportional to 212,666.22, 318,698.40 and 117,938.06

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Solution

The fourth proportional to 212,666.22, 318,698.40 and 117,938.06 is: 176,740.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,666.22 : 318,698.40 = 117,938.06 : x
  2. Step 2: Convert to fraction form
    212,666.22/318,698.40 = 117,938.06/x
  3. Step 3: Cross multiply
    212,666.22x = 318,698.40 × 117,938.06
  4. Step 4: Simplify right side
    212,666.22x = 37,586,671,021.10
  5. Step 5: Solve for x
    x = 37,586,671,021.10/212,666.22
  6. Step 6: Final answer
    x = 176,740.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.