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Finding the Fourth Proportional to 528,982.64, 730,219.54 and 357,133.40

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Solution

The fourth proportional to 528,982.64, 730,219.54 and 357,133.40 is: 492,994.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,982.64 : 730,219.54 = 357,133.40 : x
  2. Step 2: Convert to fraction form
    528,982.64/730,219.54 = 357,133.40/x
  3. Step 3: Cross multiply
    528,982.64x = 730,219.54 × 357,133.40
  4. Step 4: Simplify right side
    528,982.64x = 260,785,782,522.71
  5. Step 5: Solve for x
    x = 260,785,782,522.71/528,982.64
  6. Step 6: Final answer
    x = 492,994.97

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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.