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Finding the Fourth Proportional to 286,285.60, 429,428.40 and 283,661.20

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Solution

The fourth proportional to 286,285.60, 429,428.40 and 283,661.20 is: 425,491.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,285.60 : 429,428.40 = 283,661.20 : x
  2. Step 2: Convert to fraction form
    286,285.60/429,428.40 = 283,661.20/x
  3. Step 3: Cross multiply
    286,285.60x = 429,428.40 × 283,661.20
  4. Step 4: Simplify right side
    286,285.60x = 121,812,175,258.08
  5. Step 5: Solve for x
    x = 121,812,175,258.08/286,285.60
  6. Step 6: Final answer
    x = 425,491.80

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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.