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Finding the Fourth Proportional to 369,478.95, 509,886.54 and 216,480.48

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Solution

The fourth proportional to 369,478.95, 509,886.54 and 216,480.48 is: 298,746.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,478.95 : 509,886.54 = 216,480.48 : x
  2. Step 2: Convert to fraction form
    369,478.95/509,886.54 = 216,480.48/x
  3. Step 3: Cross multiply
    369,478.95x = 509,886.54 × 216,480.48
  4. Step 4: Simplify right side
    369,478.95x = 110,380,482,924.74
  5. Step 5: Solve for x
    x = 110,380,482,924.74/369,478.95
  6. Step 6: Final answer
    x = 298,746.34

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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.