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Finding the Fourth Proportional to 403,690.88, 557,066.76 and 242,450.12

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Solution

The fourth proportional to 403,690.88, 557,066.76 and 242,450.12 is: 334,565.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,690.88 : 557,066.76 = 242,450.12 : x
  2. Step 2: Convert to fraction form
    403,690.88/557,066.76 = 242,450.12/x
  3. Step 3: Cross multiply
    403,690.88x = 557,066.76 × 242,450.12
  4. Step 4: Simplify right side
    403,690.88x = 135,060,902,810.01
  5. Step 5: Solve for x
    x = 135,060,902,810.01/403,690.88
  6. Step 6: Final answer
    x = 334,565.16

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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.