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Finding the Fourth Proportional to 475,640.40, 656,376.30 and 260,782.32

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Solution

The fourth proportional to 475,640.40, 656,376.30 and 260,782.32 is: 359,875.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,640.40 : 656,376.30 = 260,782.32 : x
  2. Step 2: Convert to fraction form
    475,640.40/656,376.30 = 260,782.32/x
  3. Step 3: Cross multiply
    475,640.40x = 656,376.30 × 260,782.32
  4. Step 4: Simplify right side
    475,640.40x = 171,171,334,307.02
  5. Step 5: Solve for x
    x = 171,171,334,307.02/475,640.40
  6. Step 6: Final answer
    x = 359,875.52

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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.