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Finding the Fourth Proportional to 610,979.34, 915,384.69 and 255,210.42

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Solution

The fourth proportional to 610,979.34, 915,384.69 and 255,210.42 is: 382,362.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,979.34 : 915,384.69 = 255,210.42 : x
  2. Step 2: Convert to fraction form
    610,979.34/915,384.69 = 255,210.42/x
  3. Step 3: Cross multiply
    610,979.34x = 915,384.69 × 255,210.42
  4. Step 4: Simplify right side
    610,979.34x = 233,615,711,196.47
  5. Step 5: Solve for x
    x = 233,615,711,196.47/610,979.34
  6. Step 6: Final answer
    x = 382,362.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.