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Finding the Fourth Proportional to 524,105.40, 785,639.70 and 208,140.60

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Solution

The fourth proportional to 524,105.40, 785,639.70 and 208,140.60 is: 312,005.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,105.40 : 785,639.70 = 208,140.60 : x
  2. Step 2: Convert to fraction form
    524,105.40/785,639.70 = 208,140.60/x
  3. Step 3: Cross multiply
    524,105.40x = 785,639.70 × 208,140.60
  4. Step 4: Simplify right side
    524,105.40x = 163,523,518,541.82
  5. Step 5: Solve for x
    x = 163,523,518,541.82/524,105.40
  6. Step 6: Final answer
    x = 312,005.03

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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.