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Finding the Fourth Proportional to 368,994.80, 553,492.20 and 256,437.20

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Solution

The fourth proportional to 368,994.80, 553,492.20 and 256,437.20 is: 384,655.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,994.80 : 553,492.20 = 256,437.20 : x
  2. Step 2: Convert to fraction form
    368,994.80/553,492.20 = 256,437.20/x
  3. Step 3: Cross multiply
    368,994.80x = 553,492.20 × 256,437.20
  4. Step 4: Simplify right side
    368,994.80x = 141,935,989,989.84
  5. Step 5: Solve for x
    x = 141,935,989,989.84/368,994.80
  6. Step 6: Final answer
    x = 384,655.80

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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.