Finding the Fourth Proportional to 318,919,133.20, 478,080,101.40 and 249,793,603.60
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Solution
The fourth proportional to 318,919,133.20, 478,080,101.40 and 249,793,603.60 is: 374,456,528.02
Step by Step Solution
- Step 1: Write the proportion equation
318,919,133.20 : 478,080,101.40 = 249,793,603.60 : x - Step 2: Convert to fraction form
318,919,133.20/478,080,101.40 = 249,793,603.60/x - Step 3: Cross multiply
318,919,133.20x = 478,080,101.40 × 249,793,603.60 - Step 4: Simplify right side
318,919,133.20x = 119,421,351,338,159,392 - Step 5: Solve for x
x = 119,421,351,338,159,392/318,919,133.20 - Step 6: Final answer
x = 374,456,528.02
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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.