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Finding the Fourth Proportional to 418,836.34, 578,007.12 and 237,555.64

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Solution

The fourth proportional to 418,836.34, 578,007.12 and 237,555.64 is: 327,834.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,836.34 : 578,007.12 = 237,555.64 : x
  2. Step 2: Convert to fraction form
    418,836.34/578,007.12 = 237,555.64/x
  3. Step 3: Cross multiply
    418,836.34x = 578,007.12 × 237,555.64
  4. Step 4: Simplify right side
    418,836.34x = 137,308,851,316.16
  5. Step 5: Solve for x
    x = 137,308,851,316.16/418,836.34
  6. Step 6: Final answer
    x = 327,834.14

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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.