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Finding the Fourth Proportional to 388,810.13, 583,215.19 and 93,322.13

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Solution

The fourth proportional to 388,810.13, 583,215.19 and 93,322.13 is: 139,983.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,810.13 : 583,215.19 = 93,322.13 : x
  2. Step 2: Convert to fraction form
    388,810.13/583,215.19 = 93,322.13/x
  3. Step 3: Cross multiply
    388,810.13x = 583,215.19 × 93,322.13
  4. Step 4: Simplify right side
    388,810.13x = 54,426,880,629.77
  5. Step 5: Solve for x
    x = 54,426,880,629.77/388,810.13
  6. Step 6: Final answer
    x = 139,983.19

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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.