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Finding the Fourth Proportional to 423,990.18, 585,078.93 and 242,703.54

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Solution

The fourth proportional to 423,990.18, 585,078.93 and 242,703.54 is: 334,915.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,990.18 : 585,078.93 = 242,703.54 : x
  2. Step 2: Convert to fraction form
    423,990.18/585,078.93 = 242,703.54/x
  3. Step 3: Cross multiply
    423,990.18x = 585,078.93 × 242,703.54
  4. Step 4: Simplify right side
    423,990.18x = 142,000,727,490.41
  5. Step 5: Solve for x
    x = 142,000,727,490.41/423,990.18
  6. Step 6: Final answer
    x = 334,915.13

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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.