Finding the Fourth Proportional to 421,539,334.52, 581,785,130.14 and 242,889,007.12
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Solution
The fourth proportional to 421,539,334.52, 581,785,130.14 and 242,889,007.12 is: 335,221,890.45
Step by Step Solution
- Step 1: Write the proportion equation
421,539,334.52 : 581,785,130.14 = 242,889,007.12 : x - Step 2: Convert to fraction form
421,539,334.52/581,785,130.14 = 242,889,007.12/x - Step 3: Cross multiply
421,539,334.52x = 581,785,130.14 × 242,889,007.12 - Step 4: Simplify right side
421,539,334.52x = 141,309,212,616,884,592 - Step 5: Solve for x
x = 141,309,212,616,884,592/421,539,334.52 - Step 6: Final answer
x = 335,221,890.45
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.