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Finding the Fourth Proportional to 369,485.30, 509,846.40 and 208,330.74

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Solution

The fourth proportional to 369,485.30, 509,846.40 and 208,330.74 is: 287,472.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,485.30 : 509,846.40 = 208,330.74 : x
  2. Step 2: Convert to fraction form
    369,485.30/509,846.40 = 208,330.74/x
  3. Step 3: Cross multiply
    369,485.30x = 509,846.40 × 208,330.74
  4. Step 4: Simplify right side
    369,485.30x = 106,216,677,798.34
  5. Step 5: Solve for x
    x = 106,216,677,798.34/369,485.30
  6. Step 6: Final answer
    x = 287,472.00

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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.