Home / 355,913.40-533,999.70-145,702.20

Finding the Fourth Proportional to 355,913.40, 533,999.70 and 145,702.20

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Solution

The fourth proportional to 355,913.40, 533,999.70 and 145,702.20 is: 218,606.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,913.40 : 533,999.70 = 145,702.20 : x
  2. Step 2: Convert to fraction form
    355,913.40/533,999.70 = 145,702.20/x
  3. Step 3: Cross multiply
    355,913.40x = 533,999.70 × 145,702.20
  4. Step 4: Simplify right side
    355,913.40x = 77,804,931,089.34
  5. Step 5: Solve for x
    x = 77,804,931,089.34/355,913.40
  6. Step 6: Final answer
    x = 218,606.36

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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.