Home / 219,308,858.40-328,963,287.60-212,931,566.40

Finding the Fourth Proportional to 219,308,858.40, 328,963,287.60 and 212,931,566.40

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Solution

The fourth proportional to 219,308,858.40, 328,963,287.60 and 212,931,566.40 is: 319,397,349.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,308,858.40 : 328,963,287.60 = 212,931,566.40 : x
  2. Step 2: Convert to fraction form
    219,308,858.40/328,963,287.60 = 212,931,566.40/x
  3. Step 3: Cross multiply
    219,308,858.40x = 328,963,287.60 × 212,931,566.40
  4. Step 4: Simplify right side
    219,308,858.40x = 70,046,668,116,761,704
  5. Step 5: Solve for x
    x = 70,046,668,116,761,704/219,308,858.40
  6. Step 6: Final answer
    x = 319,397,349.60

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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.