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Finding the Fourth Proportional to 426,601.32, 640,018.68 and 186,671.62

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Solution

The fourth proportional to 426,601.32, 640,018.68 and 186,671.62 is: 280,058.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,601.32 : 640,018.68 = 186,671.62 : x
  2. Step 2: Convert to fraction form
    426,601.32/640,018.68 = 186,671.62/x
  3. Step 3: Cross multiply
    426,601.32x = 640,018.68 × 186,671.62
  4. Step 4: Simplify right side
    426,601.32x = 119,473,323,825.86
  5. Step 5: Solve for x
    x = 119,473,323,825.86/426,601.32
  6. Step 6: Final answer
    x = 280,058.50

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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.