Home / 280,378.53-386,916.35-153,056.25

Finding the Fourth Proportional to 280,378.53, 386,916.35 and 153,056.25

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Solution

The fourth proportional to 280,378.53, 386,916.35 and 153,056.25 is: 211,214.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,378.53 : 386,916.35 = 153,056.25 : x
  2. Step 2: Convert to fraction form
    280,378.53/386,916.35 = 153,056.25/x
  3. Step 3: Cross multiply
    280,378.53x = 386,916.35 × 153,056.25
  4. Step 4: Simplify right side
    280,378.53x = 59,219,964,829.41
  5. Step 5: Solve for x
    x = 59,219,964,829.41/280,378.53
  6. Step 6: Final answer
    x = 211,214.34

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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.