Home / 315,271.20-472,906.80-289,466.40

Finding the Fourth Proportional to 315,271.20, 472,906.80 and 289,466.40

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Solution

The fourth proportional to 315,271.20, 472,906.80 and 289,466.40 is: 434,199.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,271.20 : 472,906.80 = 289,466.40 : x
  2. Step 2: Convert to fraction form
    315,271.20/472,906.80 = 289,466.40/x
  3. Step 3: Cross multiply
    315,271.20x = 472,906.80 × 289,466.40
  4. Step 4: Simplify right side
    315,271.20x = 136,890,628,931.52
  5. Step 5: Solve for x
    x = 136,890,628,931.52/315,271.20
  6. Step 6: Final answer
    x = 434,199.60

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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.