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Finding the Fourth Proportional to 572,490.40, 858,476.40 and 217,386.40

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Solution

The fourth proportional to 572,490.40, 858,476.40 and 217,386.40 is: 325,981.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,490.40 : 858,476.40 = 217,386.40 : x
  2. Step 2: Convert to fraction form
    572,490.40/858,476.40 = 217,386.40/x
  3. Step 3: Cross multiply
    572,490.40x = 858,476.40 × 217,386.40
  4. Step 4: Simplify right side
    572,490.40x = 186,621,094,080.96
  5. Step 5: Solve for x
    x = 186,621,094,080.96/572,490.40
  6. Step 6: Final answer
    x = 325,981.18

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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.