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Finding the Fourth Proportional to 418,993.44, 578,199.36 and 228,002.40

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Solution

The fourth proportional to 418,993.44, 578,199.36 and 228,002.40 is: 314,637.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,993.44 : 578,199.36 = 228,002.40 : x
  2. Step 2: Convert to fraction form
    418,993.44/578,199.36 = 228,002.40/x
  3. Step 3: Cross multiply
    418,993.44x = 578,199.36 × 228,002.40
  4. Step 4: Simplify right side
    418,993.44x = 131,830,841,758.46
  5. Step 5: Solve for x
    x = 131,830,841,758.46/418,993.44
  6. Step 6: Final answer
    x = 314,637.01

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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.