Home / 278,729,462.48-384,636,605-153,280,602.32

Finding the Fourth Proportional to 278,729,462.48, 384,636,605 and 153,280,602.32

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Solution

The fourth proportional to 278,729,462.48, 384,636,605 and 153,280,602.32 is: 211,521,702.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,729,462.48 : 384,636,605 = 153,280,602.32 : x
  2. Step 2: Convert to fraction form
    278,729,462.48/384,636,605 = 153,280,602.32/x
  3. Step 3: Cross multiply
    278,729,462.48x = 384,636,605 × 153,280,602.32
  4. Step 4: Simplify right side
    278,729,462.48x = 58,957,330,488,719,920
  5. Step 5: Solve for x
    x = 58,957,330,488,719,920/278,729,462.48
  6. Step 6: Final answer
    x = 211,521,702.67

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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.