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Finding the Fourth Proportional to 369,870.80, 554,806.20 and 355,355.60

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Solution

The fourth proportional to 369,870.80, 554,806.20 and 355,355.60 is: 533,033.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,870.80 : 554,806.20 = 355,355.60 : x
  2. Step 2: Convert to fraction form
    369,870.80/554,806.20 = 355,355.60/x
  3. Step 3: Cross multiply
    369,870.80x = 554,806.20 × 355,355.60
  4. Step 4: Simplify right side
    369,870.80x = 197,153,490,084.72
  5. Step 5: Solve for x
    x = 197,153,490,084.72/369,870.80
  6. Step 6: Final answer
    x = 533,033.40

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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.