Home / 212,911,622.40-319,402,470.96-65,355,477.60

Finding the Fourth Proportional to 212,911,622.40, 319,402,470.96 and 65,355,477.60

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Solution

The fourth proportional to 212,911,622.40, 319,402,470.96 and 65,355,477.60 is: 98,043,971.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,911,622.40 : 319,402,470.96 = 65,355,477.60 : x
  2. Step 2: Convert to fraction form
    212,911,622.40/319,402,470.96 = 65,355,477.60/x
  3. Step 3: Cross multiply
    212,911,622.40x = 319,402,470.96 × 65,355,477.60
  4. Step 4: Simplify right side
    212,911,622.40x = 20,874,701,036,210,928
  5. Step 5: Solve for x
    x = 20,874,701,036,210,928/212,911,622.40
  6. Step 6: Final answer
    x = 98,043,971.49

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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.