Home / 280,056.48-418,298.91-253,361.16

Finding the Fourth Proportional to 280,056.48, 418,298.91 and 253,361.16

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Solution

The fourth proportional to 280,056.48, 418,298.91 and 253,361.16 is: 378,426.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,056.48 : 418,298.91 = 253,361.16 : x
  2. Step 2: Convert to fraction form
    280,056.48/418,298.91 = 253,361.16/x
  3. Step 3: Cross multiply
    280,056.48x = 418,298.91 × 253,361.16
  4. Step 4: Simplify right side
    280,056.48x = 105,980,697,064.34
  5. Step 5: Solve for x
    x = 105,980,697,064.34/280,056.48
  6. Step 6: Final answer
    x = 378,426.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.