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Finding the Fourth Proportional to 282,639.16, 390,026.10 and 173,784.88

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Solution

The fourth proportional to 282,639.16, 390,026.10 and 173,784.88 is: 239,813.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,639.16 : 390,026.10 = 173,784.88 : x
  2. Step 2: Convert to fraction form
    282,639.16/390,026.10 = 173,784.88/x
  3. Step 3: Cross multiply
    282,639.16x = 390,026.10 × 173,784.88
  4. Step 4: Simplify right side
    282,639.16x = 67,780,638,985.37
  5. Step 5: Solve for x
    x = 67,780,638,985.37/282,639.16
  6. Step 6: Final answer
    x = 239,813.33

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1.5x scale

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.