Home / 423,228,980.63-634,681,719.95-139,222,081.55

Finding the Fourth Proportional to 423,228,980.63, 634,681,719.95 and 139,222,081.55

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Solution

The fourth proportional to 423,228,980.63, 634,681,719.95 and 139,222,081.55 is: 208,779,913.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,228,980.63 : 634,681,719.95 = 139,222,081.55 : x
  2. Step 2: Convert to fraction form
    423,228,980.63/634,681,719.95 = 139,222,081.55/x
  3. Step 3: Cross multiply
    423,228,980.63x = 634,681,719.95 × 139,222,081.55
  4. Step 4: Simplify right side
    423,228,980.63x = 88,361,710,169,303,648
  5. Step 5: Solve for x
    x = 88,361,710,169,303,648/423,228,980.63
  6. Step 6: Final answer
    x = 208,779,913.98

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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.