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Finding the Fourth Proportional to 382,970.61, 528,322.05 and 247,048.35

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Solution

The fourth proportional to 382,970.61, 528,322.05 and 247,048.35 is: 340,812.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,970.61 : 528,322.05 = 247,048.35 : x
  2. Step 2: Convert to fraction form
    382,970.61/528,322.05 = 247,048.35/x
  3. Step 3: Cross multiply
    382,970.61x = 528,322.05 × 247,048.35
  4. Step 4: Simplify right side
    382,970.61x = 130,521,090,721.12
  5. Step 5: Solve for x
    x = 130,521,090,721.12/382,970.61
  6. Step 6: Final answer
    x = 340,812.29

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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.