Home / 212,720.04-316,718.44-209,741.20

Finding the Fourth Proportional to 212,720.04, 316,718.44 and 209,741.20

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Solution

The fourth proportional to 212,720.04, 316,718.44 and 209,741.20 is: 312,283.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,720.04 : 316,718.44 = 209,741.20 : x
  2. Step 2: Convert to fraction form
    212,720.04/316,718.44 = 209,741.20/x
  3. Step 3: Cross multiply
    212,720.04x = 316,718.44 × 209,741.20
  4. Step 4: Simplify right side
    212,720.04x = 66,428,904,351.58
  5. Step 5: Solve for x
    x = 66,428,904,351.58/212,720.04
  6. Step 6: Final answer
    x = 312,283.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.