Home / 319,121.10-478,681.65-262,040.40

Finding the Fourth Proportional to 319,121.10, 478,681.65 and 262,040.40

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Solution

The fourth proportional to 319,121.10, 478,681.65 and 262,040.40 is: 393,060.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,121.10 : 478,681.65 = 262,040.40 : x
  2. Step 2: Convert to fraction form
    319,121.10/478,681.65 = 262,040.40/x
  3. Step 3: Cross multiply
    319,121.10x = 478,681.65 × 262,040.40
  4. Step 4: Simplify right side
    319,121.10x = 125,433,931,038.66
  5. Step 5: Solve for x
    x = 125,433,931,038.66/319,121.10
  6. Step 6: Final answer
    x = 393,060.60

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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.